Simple regex

[johno77]

Hi

I am creating a regex so that the variable telephone is a the value read in from a html form. I want to delete any white space which i think i have done and make sure there are eleven digits - while the script works for checking ranges 0-11 if the user enters fourteen numbers the prompt valid number appears

Any ideas

($telephone1 = $telephone) =~ s/\s+//g;
if ($telephone1=~m/\d{11}/){print &quot;$telephone is a valid option<br>&quot;;}
else {print &quot;$telephone is an invalid number<br>&quot;;}

 

[k5tm]

Simply because a 14-digit number contains several valis 11-digit numbers.

Hint: try ^\d{11}$

Tom Morrison

http://www.liant.com

 

[rosenk]

If you want to specifically allow 0-11 digits, but no more you'd want

if ($telephone1=~m/^\d{0,11}$/)

I'm surprised that your previous code allowed less than 11 digits, though. It should have matched 11 digits anywhere in [tt]$telephone1[/tt].

In the new regex, the [tt]^[/tt] matches the beginning of the string and [tt]$[/tt] matches the end.